When I use the Despam action on a page that I've also had to despam at an earlier time, I get the message You cannot save empty pages. The page remains unchanged.

Steps to reproduce:

1. Create a new page using account A.
2. Use Despam on the page. The page gets deleted.
3. Create the page again using account B.
4. Use Despam again on the page. It will say You cannot save empty pages. The page remains as it was saved by B.